package com.jobs.producer1.config;

import org.springframework.amqp.core.*;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;
@Configuration
public class TtlQueueConfig {

    public static final String X_EXCHANGE = "X";

    public static final String QUEUE_A = "QA";

    public static final String QUEUE_B = "QB";

    //死信交换机
    public static final String Y_DEAD_LETTER_EXCHANGE = "Y";
    //死信队列
    public static final String DEAD_LETTER_QUEUE = "QD";

    //死信ROUTING KEY
    public static final String DEAD_LETTER_ROUTING_KEY = "YD";

    public static final  String QUEUE_A_BINDING_EX = "XA";

    public static final  String QUEUE_B_BINDING_EX = "XB";


    /**
     * 声明 xExchange
     * @return
     */
    @Bean("xExchange")
    public DirectExchange xExchange() {
        return new DirectExchange(X_EXCHANGE);
    }

    /**
     * 声明 死信队列交换机
     * @return
     */
    @Bean("yExchange")
    public DirectExchange yExchange() {
        return new DirectExchange(Y_DEAD_LETTER_EXCHANGE);
    }

    /**
     * 声明队列 A ttl 为 10s 并绑定到对应的死信交换机
     * @return
     */
    @Bean("queueA")
    public Queue queueA() {
        Map<String, Object> args = new HashMap<>(3);
        //声明当前队列绑定的死信交换机
        args.put("x-dead-letter-exchange", Y_DEAD_LETTER_EXCHANGE);
        //声明当前队列的死信路由 key
        args.put("x-dead-letter-routing-key", DEAD_LETTER_ROUTING_KEY);
        //声明队列的 TTL
        args.put("x-message-ttl", 1000 * 10);
        return QueueBuilder.durable(QUEUE_A).withArguments(args).build();
    }

    /**
     * 声明队列 A 绑定 X 交换机
     * @param queueA
     * @param xExchange
     * @return
     */
    @Bean
    public Binding queueaBindingX(@Qualifier("queueA") Queue queueA,
                                  @Qualifier("xExchange") DirectExchange xExchange) {
        return BindingBuilder.bind(queueA).to(xExchange).with(QUEUE_A_BINDING_EX);
    }

    /**
     * 声明队列 B ttl 为 40s 并绑定到对应的死信交换机
     * @return
     */
    @Bean("queueB")
    public Queue queueB() {
        Map<String, Object> args = new HashMap<>(3);
        //声明当前队列绑定的死信交换机
        args.put("x-dead-letter-exchange", Y_DEAD_LETTER_EXCHANGE);
        //声明当前队列的死信路由 key
        args.put("x-dead-letter-routing-key", DEAD_LETTER_ROUTING_KEY);
        //声明队列的 TTL
        args.put("x-message-ttl", 40 * 1000);
        return QueueBuilder.durable(QUEUE_B).withArguments(args).build();
    }

    /**
     * 声明队列 B 绑定 X 交换机
     * @param queue1B
     * @param xExchange
     * @return
     */
    @Bean
    public Binding queuebBindingX(@Qualifier("queueB") Queue queue1B,
                                  @Qualifier("xExchange") DirectExchange xExchange) {
        return BindingBuilder.bind(queue1B).to(xExchange).with(QUEUE_B_BINDING_EX);
    }

    /**
     * 声明死信队列 QD
     * @return
     */
    @Bean("queueD")
    public Queue queueD() {
        return new Queue(DEAD_LETTER_QUEUE);
    }

    /**
     * 声明死信队列 QD 绑定关系
     * @param queueD
     * @param yExchange
     * @return
     */
    @Bean
    public Binding deadLetterBindingQAD(@Qualifier("queueD") Queue queueD,
                                        @Qualifier("yExchange") DirectExchange yExchange) {
        return BindingBuilder.bind(queueD).to(yExchange).with(DEAD_LETTER_ROUTING_KEY);
    }

}

